Crusher housing



y 19 E. R. BRAKE 2,756,002

CRUSHER HOUSING Filed e- 2 1955 2 Sheets-Sheet 2 Ell?- 2 INVENTOR, 1c; IQ EDGAR E.BEAKE,

HTT Y United States Patent 9 CRUSHER HOUSING Edgar R. Brake, Columbus, Ohio, assignor to The J etfrey Manufacturing Company, a corporation of Ohio Application August 26, 1953, Serial No. 376,649

2 Claims. (Cl. 241-285) This invention relates to a housing for a material reducing crusher apparatus, and one object of the invention is to provide an improved housing structure of this type that is of simple yet greatly improved construction.

In carrying out the above object, it is another object of the invention to provide an improved housing structure adapted to enclose a material reducing element, preferably, but not necessarily, in the form of a material reducing rotor in which the wall elements that cooperate to form a material reducing chamber may be swung from their crushing operating positions to permit access to the internal parts of the crusher whereby a workman may clean and/ or repair them.

Another object of the invention is to provide an improved crusher housing having opposite sides which may be removed from the housing as a unit to expose the interior of the crushing chamber and crusher rotor normally contained therein.

Other objects of the invention will appear hereinafter, the novel features and combinations being set forth in the appended claims.

In the accompanying drawings:

Fig. 1 is a View in perspective of a crusher built in accordance with this invention;

Fig. 2 is another view in perspective of the apparatus seen in Fig. l, the view showing the sides of the apparatus opposite those seen in Fig. l; and

Fig. 3 is a view in section, the section being taken through the housing of the apparatus seen in Figs. 1 and 2 and at a right angle with respect to the axis of the material reducing rotor of the apparatus, the view also indicating the paths of swing of opposite side elements of the housing of the apparatus.

The material reducing apparatus shown in the drawtion 12 of the base 11 is built up of a pair of spaced side channel members interconnected by cross plates 16. The smaller rectangular portion 13 of base 11 includes similar channels and plates, with one side channel member 15 and one cross plate 16 being common to both base portions 12 and 13.

A plate 17 extends over the tops of all of the channels and cross plates of the base and is secured thereto to form the top surface of the base 11 upon which various elements of the material reducing crusher assembly are mounted. A similar plate 18 (see Fig. 3) is secured to the bottoms of the channels and plates 15 and 16 to reinforce the latter and to cooperate with all of the base elements to form a rigid box-like structure. Plates 17 and 18 are provided with rectangular openings, as indicated at 19, through which crushed or reduced material may pass to be discharged from the reducing apparatus.

2,756,002 Patented July 24, 1956 The crusher housing 10 which is of novel construction includes a pair of spaced upright end walls 20 and '21, each of which includes a lower portion 22 that is generally trapezoidal in shape, and an upper rectangular portion 23 which rests upon and is removably connected to the lower portion 22 by bolts that extend through abutting fianges on the portions 22 and 23, as indicated at 24. The lower portions of end walls 20 and 21 are each reinforced by a pair of spaced upright plates 25 that carry a bed plate 26 upon which a rotor shaft bearing assembly 27 is mounted, and the bottoms of these plates or gussets 25 are secured to a bottom flange 28 of the wall portion 22.

End walls 20 and 21 are interconnected at the 'bottoms of portions 22 by a pair of spaced I-members 29 that include end plates 30 through which they are bolted to the wall portions 22, and the tops of the wall portions 23 are interconnected by a pair of generally horizontally extending top plates 31 which are spaced to provide a feed opening 32 through which material to be crushed or otherwise reduced may enter a crushing chamber 33 formed in part by the end walls 20 and 21 and the top plates 31. Flanges 28 and I-members 29 are bolted to the base 11. Y

The crusher includes a crusher rotor assembly 34 that is mounted to rotate on an axis that extends transversely f the spaced end walls 20 and 21. Rotor assembly 34 includes a shaft 35 that extends through and beyond each of the bearing assemblies 27 and upon which there is mounted between the spaced end walls 20 and 21 a rotor body including spaced discs that carry swing hammers 36 which cooperate to reduce materials in the material reducing chamber 33. One end of rotor shaft 35 carries a heavy flywheel 37, and the other end extends into a guard 38 where it may be connected through a coupling, not shown, to the motor, also not shown, mounted on the motor stand 14. Upper and lower wall portions 22 and 23 of walls 20 and 21 cooperate to provide aligned openings through which rotor shaft 35 extends and they each carry a portion of a split shaft seal 39, the function of which is obvious.

As seen in Figs. 1 and 3 of the drawings, the lower portion 22 of each end wall 20 and 21 is generally of trapezoidal shape. More specifically, each wall portion 22 includes an upright plate having parallel top and bottom surfaces, an upright side surface lying at right angles to the top and bottom surfaces, and a side surface that slopes upwardly toward the upright side surface. Upper portion 23 of each end wall 20 and 21 is rectangular and has a width equal to the length of the top surface of portion 22.

It will be seen that the elements of the housing 10 thus far described cooperate to form a pair of spaced upright end walls 20 and 21 between the upper portions of which there is formed a material reducing chamber 33 and that these upright end walls are rigidly interconnected at their tops and bottoms by elements that form feed and discharge openings of the housing 10. It will also be seen that the upper portions 23 of end walls 20 and 21 together with the top plates 31 may be removed as a unit from the bottom portions 22 of the walls 20 and 21 by merely removing the bolts that extend through flanges 24 and lifting the upper elements from the lower elements, thus to expose the rotor assembly 34.

As seen in Fig. 3 of the drawings the rotor assembly 34 rotates in a counter-clockwise direction and at its left side there is a generally upright wall or door 40 that forms one side of the material reducing chamber 33 and which cooperates with the swing hammers 36 of the material reducing rotor assembly 34 to crush and otherwise reduce materiala Side wall 40 includes an upright top portion or. section that merges into a lower curved portion which cooperates directly with the rotor assembly 34 when the crusher apparatus is operating to reduce material.

Side wall 40 includes a plate 41 that is shaped as above described and this plate 41 is reinforced on its outer side by four upright flanges 42 which are. preferably welded to the plate 41. Flanges 42 provide a plurality of aligned openings adjacent the top of the side wall 40 through which a bar 43 extends. The ends of bar 43 extend through openings in the upper portions 23 of end walls 20 and 21 and are carried in blocks 44 welded adjacent the tops thereof. Bar 43 formsa pivot upon which the side Wall 40 which extends transversely between the end walls 20 and 21 may be swung outwardly to the position indicated in dot-dash lines in Figs. 3 of the drawingsto expose one side of the rotor assembly 34, the end walls of the material reducing chamber 33, as well as its one surface that cooperates to form one side wall of the material redueing chamber 33.

At and adjacent their lower ends flanges 42 carry long removable bolts 45 that extend transversely between the end Walls 20 and 21 and through arcuately slotted openings therein. These bolts together with nuts and washers positioned on their ends cooperate to function as adjusting means for permitting the side wall 40 to be adjusted with respect to the rotor assembly 34 and to lock side wall 40 in the desired adjusted position.

The generally upright side of housing opposite side wall 40 includes an upper portion, section or door 46 and a generally similar lower portion, section or door 47 that extend transversely between the end walls and 21 and which may be swung to expose therotor assembly 34 and the interior of the material reducing chamber 33. These portions, sections or doors 46 and 47 are constructed of elements similar to those comprised in the wall or door 40, the upper portion, section or door 46 being mounted for pivotal swinging, movement about a rod or bar 48 at its top, and the lower portion, section or door 47 being similarly mounted on a rod or bar 49 adjacent its bottom. When the portions, sections or doors 46 and 47 are positioned to close or form a side of the housing 10 and the material reducing chamber 33 they are secured together by bolts 50 that extend throughadjacent end flanges of the doors 46 and 47, and bolts 51 are placed through aligned openings in the end walls 20 and 21 and the flanges of the doors 46 and 47 to lock them securely to the end walls 20 and 21.

The machine shown in the drawings may be employed with particular advantage in reducing materials which may have sticky characteristics, .such, for example, as phosphates. When materials having this characteristic are being reduced they tend to gum up the crusher, and this invention provides a crusher, opposite sides of which may be readily swung open to permit cleaning or servicing of the interior surfaces and/or parts of the crusher. As indicated in dot-dash lines in Fig. 3 of the drawings,

the door 40 may be swung to expose one side of the material reducing chamber 33 and one side of the rotor assembly 34, and the doors 46 and 47 may be swung to together about either the rod 48 or 49 by removing the bolts 51 and one or the other of the rods 48 or 49." It will also be obvious that the upper portions 23 of the end walls 20 and 21, the top plates 31,.thedoor 40, and

door 46, either alone or connected to door 47, may be removed as a unit from the bottom portion of the housing 10 by removing the bolts in flanges 24 and the bolts that secure the doors to the end walls 20 and 21, and that if door 47 is to be removed as a part of this unit it will be necessary further to remove pivot rod or bar 49.

Obviously those skilled in the art may makevarious changes in the details and arrangement of parts without departing from the spirit and scope of the invention as defined by the claims hereto appended, and applicant therefore wishes not to be restricted to the precise construction herein disclosed.

Having thus described and shown an embodiment of the invention, what it is desired to secure by Letters Patent of the United States is:

l. A crusher housing adapted to be mounted on a fixed base comprising a pair of spaced upright end walls, each end wall having a lower end wall portion fixedly secured to the base and an upper end wall portion forming a continuation of the lower end wall portion, said end wall portions being detachably secured one to the other, and means extending between the tops of the upper end wall portions forming a feed opening adjacent one side of the crusher housing, bearing means secured adjacent the end walls for supporting a rotor adapted to be disposed within the housing to reduce material fed thereto thru the feed opening, a breaker plate forming a side wall of the housing extending between the end walls at the one side of the housing, said breaker plate forming a continuation of the feed opening and depending therefrom, the bottom of the breaker plate curving inwardly concentrically with the rotor, the rotor cooperating with the breaker plate to reduce material, a pin extending between the tops of the end Walls and through the breaker plate pivotally mounting the plate for movement between its operative position adjacent the rotor and an inoperative position in which it extends laterally of the housing from the tops of the end walls, the side of the housing opposite the breaker plate being closed by a lower side plate extending between the lower end wall portions and an upper side plate extending between the upper end wall portions, a pin at the bottom of the lower side plate pivotally securing it in the housing and securing means at the top of the lower side plate releasably fixing it in position between the end walls, a

pin at the top of the upper side plate pivotally securing it in the housing and securing means at the bottom of the upper side plate releasably fixing it in position between the end walls, and means releasably securing the upper and lower side plates to each other, said upper and lower side plates swinging outwardly of the housing upon release of the side plates securing means, and said upper end wall portions being detachably secured to the lower end wall portions whereby the housing may be dismantled by separation of the upper end Wall portions from the lower end wall portions along with the breaker plate and the 1 upper side plate.

2. A crusher housing comprising a pair of spaced upright end walls, means extending across the tops of the end walls forming a feed opening adjacent one side of :the crusher housing, bearing means secured adjacent the end walls for supporting a rotor adapted to be disposed within the housing to reduce material fed thereto through lthe feed opening, a breaker plate forming a side wall of the housing extending between the end walls at the one side of the housing, said breaker plate forming a continuation of the feed opening and depending therefrom, the bottom of the breaker plate curving inwardly concentrically with the rotor, the rotor cooperating with the breaker plate to reduce material, a pin extending between the tops of the end walls and through the breaker plate 'pivotally mounting the plate for movement between its operative position adjacent the rotor and an inoperative position in which it extends laterally of the housing from the tops of the end walls, the side of the housing op 'posite the breaker plate being closed by a top side plate portion and a bottom side plate portion detachahly secured to each other to form a continuous side wall extending between the end walls, a pin extending between the bottoms of the end walls pivotally securing the bottom slde plate portion in the housing and securing means at the plate portion in the housing and securing means at the bottom of the top side plate portion releasably fixing it in position between the end walls, said top and bottom side plate portions swinging outwardly of the housing upon release of the securing means at the bottom and top of said top and bottom side plate portions, respectively, and upon release of the means detachably securing the top and bottom side plate portions to each other.

References Cited in the file of this patent UNITED STATES PATENTS 6 Dale June 16, 1914 Taggart Apr. 17, 1928 Lemmon et a! Sept. 20, 1949 Pollitz Aug. 14, 1951 FOREIGN PATENTS France June 14, 1910 (1st addition to No. 402,035) Italy Feb. 25, 1936 Germany Mar, 22, 1923 

